We (Pa) don't have it as part of the divorce process but they exist. Your L may know how to get them involved. But I agree. I think having another third party involved to sit down with everyone may be a good idea. It may not help but if a neutral third party tells your wife she's being a d*ck, it may go a long way to at least putting a damper on her hate speech. It may do nothing but I think it's worth looking into.
M:26 H:32 T:8yrs ILYBNILWY/ "I'm not happy": 2/6/16 D-Day-discovered PA/EA: 2/10/16 Separated: 2/14/16 He's living with OW I moved to different state: 06/16 Currently: Trying to move forward